SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 TT

2024 TT

2024 TT belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.031 AU it takes 1.05 yr to circle the Sun.

Apollo Observations: 18
Orbital Period · P
1.05 yr
v(q)
33.7 km/s
v(Q)
25.6 km/s
Diameter · ≈
0.01 km
TJ
5.92
Eccentricity · e
0.1367

Orbit and dynamics

Between its closest point (0.89 AU) and its farthest (1.172 AU), the heliocentric distance changes by 0.282 AU over every revolution.

One full revolution takes 1.05 yr (382 days), computed from the semi-major axis of 1.031 AU.

An eccentricity of 0.137 makes the orbit moderately elongated.

The orbital plane is tilted 10.39° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.7 km/s at perihelion and falls to 25.6 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 27.57 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 18 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2673 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.031 AU
Eccentricity
0.1367
Perihelion
0.89 AU
Aphelion
1.171938 AU
Inclination
10.39°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
290.28°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2043-Mar-18 05:20 0.382892 AU
57279785 km
18.36 km/s
2044-Mar-28 06:11 0.088883 AU
13296639 km
10.29 km/s
2046-Sep-28 23:45 0.006715 AU
1004535 km
6.28 km/s
2047-Oct-11 08:42 0.197907 AU
29606421 km
12.86 km/s
2066-Mar-20 03:28 0.172449 AU
25797949 km
16.42 km/s
2067-Mar-30 09:36 0.022168 AU
3316285 km
8.82 km/s
2069-Sep-30 02:58 0.000375 AU
56044 km
6.78 km/s
2070-Oct-10 23:13 0.040754 AU
6096738 km
12.77 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
27.57

Orbit Quality

RMS
0.26732
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.